Controller (computing)

In computer hardware, a controller may refer to:

• Memory controller, a unit that manages access to memory
• Game controller, a device by which the user controls the operation of the computer
• Host controller
• Network controller
• Graphics controller or video display controller
• SCSI host bus adapter
• Network interface controller (NIC)
• Parallel port controller
• Microcontroller unit (MCU)
• Keyboard controller
• Programmable Interrupt Controller
• Northbridge (computing)
• Southbridge (computing)
• Universal asynchronous receiver/transmitter (UART) communications controller chip
• Peripheral DMA controller
• Floppy disk controller
• Disk array controller, also known as a RAID controller, a type of storage controller
• Flash controller, or SSD controller, which manages flash memory
• Terminal Access Controller
• IBM 2821 Control Unit, used to attach card readers, punches and line printers to IBM System/360 and IBM System/370 computers
• IBM 270x and IBM 37xx, used for telecommunications
• IBM 3271, 3272, 3271, and 3174, used to attach terminals (display devices)
• MIDI controller
• Programmable logic controller